新型装配式屈曲约束支撑试验研究

The experimental research of a new fabricated buckling restrained brace

为了克服普通灌浆型屈曲约束支撑加工周期较长、钢结构加工和填充料加工交叉作业等缺点,提出了一种新型装配式屈曲约束支撑;该支撑采用填充料分段预制,然后与支撑芯板及外套筒组合拼装的加工方式,使得钢结构部分和灌浆料部分同时进行加工,简化了支撑加工工序,缩短了加工周期,降低了支撑制造过程中的人工费用。并对该新型屈曲约束支撑进行了往复加载试验,对试验数据进行分析处理。结果表明:此新型装配式屈曲约束支撑具有很好的滞回特征和耗能性能,各项指标均符合《建筑抗震设计规范》对位移相关型消能器的性能指标要求,是一种十分有效的耗能构件。

In order to overcome the weaknesses of the general grouting buckling restrained brace, including longer processing cycle, the cross-operation between the machining of steel construction and filler. The paper comes up with a kind of new fabricated buckling-restrained brace. This brace adopts the processing method that filling material prefabricated in sections, which combines with brace core board and outer sleeve, processing the steel construction and grouting material simultaneously, and simplifying machining procedure of the brace, shortening machining cycle, reduce the labor costs in brace manufacturing. Meanwhile, the paper has a cyclic loading test for the new fabricated buckling-restrained brace and analysis of the experimental data. As the test shows： this new fabricated buckling restrained brace is a kind of effective energy-consuming component, has a good hysteric characteristic and energy dissipating. All the indexes are in line with the requirements of displacement type damper in seismic design of buildings.